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l No.l 197,518. I Patented Nov.. 27, 1817.

llmumiun Y ILFETERSy PHOTO-LITHOGRAPHER, WASHINGTON. D CA UNITED, STATESPATENT formen.

WILHELM WEYHE, orf BREMEN, GERMANY.r

IMPROVEMENT |N STEAM-PUMPS.

Specification forming part of Letters Patent No. 197.45478, dated November Q7, 1877.; application failed september i13, 1877. 1

`To all 'whom it may concern Be it known that 1, WILHELM WEYHE, of Bremen, Germany, have invented a certain new' and" improved combined steam -engine without the motion of a sliding valve, and

pump without valves, of which.l the following j isa specification: i l

The invention relates vto certain improve- 4 ments in steam-pumps, whereby the use of tudinal side elevation of a steam-pump constructed according to my invention. Fig. 2 is a horizontalsection of the saine. Figs. 3 to 18, inclusive, are detail views representing the construction of the pump and steam pistons, the various positions which they assume, and the means for oscillating or rocking the pistons.

The steam-cylinder A and the pump-cylinder B are both of the same construction, and have legs for attaching the same to a bed'- frame, and inlet and outlet openings a b. The pistons of the cylinders dier, however, in construction, and both are attached to a piston-rod, F, which receives a reciprocating movement through the medium lof ahy-wheel,

O, crank D, and connecting-rod E. The piston-rod receives, in addition to its reciprocating movement, an oscillating or axial movement, through the agency of a spur or stud,c, lon the piston-rod entering a guide-plate, d, or what may be termed a plate with a cam-groove. (Shown more fully in Figs. 17 and 18.) The oscillating or rocking movement of the pistonrod, or the stud thereof, is aided by the pivoted plate or shuttle f,turning on an axis-pin, e, which plate isxforced to turn in one direction, to the right, by means of two springs, g, bearing against two pins, h, of the pivoted plate or shuttle. When the spur cleaves the position indicated in black in Fig.' 18, and takes the position shown in dotted lines, which 'is at the end of the stroke of the piston, then the pivoted plate or shuttle iiies into the position indicated by the dotted lines, for permitting 1 the spur c' to pass around the point f of the plate into that portion of the cam-groove lead-f ing to the right. In consequence of these motions thepiston-rod will be rocked or oscillated during the backward and forward strokes by the action of the pump-piston itself. The steam-piston is provided, for the aforesaid purpose, with peripheral channels or ducts, whichV are so shaped and disposed that they will cffect the induction of the live steam and eduction of the exhaust-steam. In order to enable this operation totake place the piston is tted steam-tight to the interior surface of the cylinder. The steam-piston consists of the Vcylindrical Shen e', which is spiitor divided ''lf longitudinally in a zigzag manner, and combined with means for expanding and contracting the same, so as `not to have any unnecessary friction or waste of steam. The means for adjusting the piston-shell and securing the same consists of the cone-shaped heads H1 H2, of which the former is secured to the piston-rod by means of a conical collar, z', while th'e latter is made adjustable on the rod by a screw-threaded-sleeve, k, for expanding or adjusting ythe shell of the piston. The' sleeve is firmly connected with the cone-shaped head H2, and has an internal screw-thread at vits inner end, which lits on a corresponding external thread" cut on -the piston-rod. The outer end of said sleeve has a toothed or milled nut, adapted to receive a -wrench for turning or radjusting the sleeve. r1`he cone-shaped head H2 has a cylindrical inner extension, which lits on and is guided by a similar extension of the opposite head, H1. i

An elastic packing, e, iills the spacebetween the heads and expansible shell ofthe piston, as is shown more clearlyr in Fig. 16 of drawings.

The steam, enteringthe inlet-openin g tof the I cylinder, is conveyed to the front or rear of the same by means of the channels m and m2, and the exhaust-steam is led oli by the channels n and n2. The different positions of the pistons are indicated by Figs. 3 to 8, inclusive.

Figs. 3 and 5 represent the piston .inits mid-Q dle position, when it is moving from right to left. The course of the steam is indicated by the arrows, and does not require further explanation. As shown in Fig. 4, the piston has reached the end of its stroke, and the several channels or steam-ducts are closed, as is more clearly illustrated in Fig. 7. Figs. 6, 8, andl 17 finally show the piston again in its middle position, when it is moving from left to right. The pump-piston can be constructed in several ways without departing from the principle of my invention, which is a piston shaped so as to receive and discharge the water, and

` the entire absence of valves. Figs. 9 to 13,

inclusive, and the main Fig; 2,-illustrate a pis ton consisting of two end heads, 0,'placed at a` suitable distance apart from each otherabout the length of the stroke of the piston-and connected by means of twov longitudinal bars, p, and a cone-shaped or tapering core-piece, q. The end heads are provided with circumferential packing-rings a',V and the connecting-bars are provided with similar packing-strips, connecting the packing-rings of the heads, so as to produce a tight 'joint between the wall of the cylinder and the piston. The heads `o are broken through at opposite sides, so as jto form apertures or ports i', of which one 'leads to the front and the other to the rear of the piston.

As shown in Fig. 2, the space to the right of the piston is the suction-space, and.` that to the left the pressurespace. `The vchannels s of the piston are closed at the end ofthe stroke,` as shown in Fig. 12, and when, by the oscillation of the piston,the channels change their positions, the suction-space of Fig. 2 will become the pressure-space, -and vice versa.

,v lIn the modification shown in Figsfl and 16, the piston is provided with semi-cylindrical end heads t, projecting from opposite sides thereof. `In this formof construction the chan?" nelsy ofthe piston aredispensed with. l It will be apparent that the cross-head o2 mustibe constructed so that the piston-rod can rock in the same, and for this object the rod is held in said cross-head by two rings, n, and.

is also guided by a tubular block, M. p

I desire to use my reciprocating and oseillatin g pistons inother machines besides steampumps, andrres'erve for myself' the right to make changes in the details of construction and form. 4 l s y y Having-thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

-1. In a steam-pump, the combination, f channeledpistons operating in pairs in axiallyl" opposite cylinders, and having ga rod provided with a spur, of a xed slotted guide-plateand a pivotedspring-pressed plate y or shuttle, `op- 1 erating on the piston-rod connecting the pair q of pistons to effect the rotation of the latter, `1

thereby reversingthe action of the lluid inthe cylinders, substantially and for the purpose y herein set forth. 1` `2. The combination, in a steam-pump having the steam and pump pistons `attached to ja reciprocating and `oscillating piston-rod, of fa steam-piston consisting, essentially, of anelit-` plausible` shell havin g channels' upon its surface, for conducting live and` exhaust steam tol and from the ends of the cylinder, the xed and adjustable endheads, and suitable adjusting and retaining devices, substantially asand for the purpose set forth. s s t y In testimony whereof Ihave signed my name t to this specification in the presence of two sub-` y scribing witnesses. p l WILHELM WEYHE. y Witnesses: t

' GERARD WRNsEsLAUs v..NAwRocKI,

EDWARD P. MAQLEAN. l; 

